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EIS Drift Risk Screen

Heuristic screening tool to assess Interface Zone (IZ) drift risk under an equivalent 168 h aging. Stack-agnostic: works across collector families, joining/consolidation routes, and solid-electrolyte families.

⚠️ Important: This is a heuristic risk screen, not an EIS fit or Kramers-Kronig test. Results are based on expert-tuned thresholds, not physics-based impedance modeling.

Organization (optional)

Organization domain

We hash this locally and use it only for organization-level analytics.

J/C window history

Peak pressure (MPa) Dwell (s) Line speed (m/min)

Pressure Cp Temperature Cp Excursion in last 48 h?

Environment

Dew point actual (°C or H₂O ppm) Dew point setpoint (°C or H₂O ppm) Excursions (last 48 h)

Reactive gases detected H₂S CO₂ (carbonate risk) O₂ (phosphate/oxide risk) N₂ (other)

Surfaces

Ra (µm) Ra target (µm)

Flatness (µm across width) Flatness target (µm)

Contamination flags Oil Oxide Solvent

Thermal plan

Soak temp (°C) Cycles applied Baseline cycles

Stack-pressure schedule

Artifacts (optional)

Artifacts you plan to upload Bond-map snapshot EIS snapshot

You can upload these later with no personal information.

Risk band

Green

Top drivers

No dominant drivers detected with supplied inputs.

Next checks

Map bonded-area (n=5 panels)
Inline impedance screen on first 20 stacks

Note: This is a heuristic screen, not Kramers-Kronig or Z-HIT validation. For Amber/Red bands, consider full EIS characterization.

No assumptions about specific metals, contact modes, or electrolyte families.